Home / 11,172.57-15,409.61-7,590.29

Finding the Fourth Proportional to 11,172.57, 15,409.61 and 7,590.29

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Solution

The fourth proportional to 11,172.57, 15,409.61 and 7,590.29 is: 10,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.57 : 15,409.61 = 7,590.29 : x
  2. Step 2: Convert to fraction form
    11,172.57/15,409.61 = 7,590.29/x
  3. Step 3: Cross multiply
    11,172.57x = 15,409.61 × 7,590.29
  4. Step 4: Simplify right side
    11,172.57x = 116,963,370.74
  5. Step 5: Solve for x
    x = 116,963,370.74/11,172.57
  6. Step 6: Final answer
    x = 10,468.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.